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Re: non-swapping director

To: lvs-users@xxxxxxxxxxxxxxxxxxxxxx
Subject: Re: non-swapping director
Cc: Joseph Mack <mack.joseph@xxxxxxxxxxxxxxx>, ja@xxxxxx
From: Joseph Mack <mack.joseph@xxxxxxx>
Date: Fri, 09 Feb 2001 16:04:07 -0500
Julian Anastasov wrote:
> 
>         Hello,
> 
> On Fri, 9 Feb 2001, Joseph Mack wrote:
> 
> > Joseph Mack wrote:
> >
> >  With sufficient number of connections, a director could
> >  start to swap out its tables (is this true?)
> 
>         IMO, this is not true. LVS uses GFP_ATOMIC kind of allocations
> and as I know such allocations can't be swapped out.

OK

> >  is there some way to stop this?
> 
>         You can try with testlvs whether the LVS uses swap. It is easy,
> just start the kernel with LILO option mem=8M and with large swap area.
> Then we must check whether more than 8MB swap will be used.

OK will try it when I get to this stage
Thanks Joe

-- 
Joseph Mack PhD, Senior Systems Engineer, Lockheed Martin
contractor to the National Environmental Supercomputer Center, 
mailto:mack.joseph@xxxxxxx ph# 919-541-0007, RTP, NC, USA


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